The specialty of Psychiatry provides for the assessment, diagnosis and management of mental illness in persons who are aged between 18 and 65 years. Adult Psychiatrists manage a patient population that includes those with psychosis, mood disorders, organic brain disorders, and personality disorders. A thorough knowledge of pharmacological treatments, psychological approaches, and an understanding of the social factors contributing to the development and perpetuation of mental illness is required in this specialty and is emphasised in training. Various areas of specialisation after a period of higher training include academic psychiatry, addiction psychiatry, forensic psychiatry, liaison psychiatry, psychotherapy and social and rehabilitation psychiatry.